final void stringToByteArray(String source, byte[] buf, int offset)
throws CharConversionException {
char[] src = source.toCharArray();
if (Trace.traceOn_)
Trace.log(
Trace.CONVERSION,
"Converting string to byte array for ccsid: " + ccsid_,
ConvTable.dumpCharArray(src));
try {
for (int bufPos = offset, srcPos = 0; srcPos < src.length; ++srcPos) {
buf[bufPos++] = (byte) (src[srcPos] >>> 8);
buf[bufPos++] = (byte) src[srcPos];
}
} catch (ArrayIndexOutOfBoundsException e) {
Trace.log(
Trace.ERROR,
"Source length: "
+ src.length
+ "; Source offset: 0; Destination length: "
+ buf.length
+ "; Destination offset: "
+ offset
+ ";",
e);
throw new CharConversionException();
}
if (Trace.traceOn_)
Trace.log(
Trace.CONVERSION,
"Destination byte array for ccsid: " + ccsid_,
buf,
offset,
src.length * 2);
}
/**
* Sets the integrated file system pathname of the AFP resource.
*
* @param path The integrated file system name of the AFP resource. The format of the resource
* string must be in the format of "/QSYS.LIB/libname.LIB/resourcename.type". Valid values for
* <i>type</i> include FNTRSC, FORMDF, OVL, PAGSEG, and PAGDFN.
* @exception PropertyVetoException If the change is vetoed.
*/
public void setPath(String path) throws PropertyVetoException {
if (path == null) {
Trace.log(Trace.ERROR, "Parameter 'path' is null");
throw new NullPointerException(PATH);
}
// check for connection...
if (impl_ != null) {
Trace.log(Trace.ERROR, "Cannot set property 'path' after connect.");
throw new ExtendedIllegalStateException(
PATH, ExtendedIllegalStateException.PROPERTY_NOT_CHANGED);
}
String oldPath = getPath();
// Tell any vetoers about the change. If anyone objects
// we let the PropertyVetoException propagate back to
// our caller.
vetos.fireVetoableChange(PATH, oldPath, path);
// no one vetoed, make the change
setIDCodePoint(buildIDCodePoint(path));
// Notify any property change listeners
changes.firePropertyChange(PATH, oldPath, path);
}
/** Forces any buffered output bytes to be written. */
void flush() // @B2A - code relocated from IFSFileOutputStreamImplRemote,etc.
throws IOException, AS400SecurityException {
// Request that changes be committed to disk.
IFSCommitReq req = new IFSCommitReq(fileHandle_);
ClientAccessDataStream ds = null;
try {
ds = (ClientAccessDataStream) server_.sendAndReceive(req);
} catch (ConnectionDroppedException e) {
Trace.log(Trace.ERROR, "Byte stream server connection lost");
connectionDropped(e);
} catch (InterruptedException e) {
Trace.log(Trace.ERROR, "Interrupted", e);
throw new InterruptedIOException(e.getMessage());
}
// Verify that the request was successful.
if (ds instanceof IFSReturnCodeRep) {
int rc = ((IFSReturnCodeRep) ds).getReturnCode();
if (rc != IFSReturnCodeRep.SUCCESS) {
throwSecurityExceptionIfAccessDenied(path_, rc); // check for "access denied"
Trace.log(Trace.ERROR, "IFSReturnCodeRep return code", descriptionForReturnCode(rc));
throw new ExtendedIOException(path_, rc);
}
} else {
// Unknown data stream.
Trace.log(Trace.ERROR, "Unknown reply data stream", ds.data_);
throw new InternalErrorException(
Integer.toHexString(ds.getReqRepID()), InternalErrorException.DATA_STREAM_UNKNOWN);
}
}
// Open a single file, list the file attributes, and close the file.
// Returns null if the file doesn't exist or is a directory.
private IFSListAttrsRep listObjAttrs(int attrsType, int flags1, int flags2)
throws IOException, AS400SecurityException {
// Assume connect() has already been done.
IFSListAttrsRep reply = null;
int fileHandle = UNINITIALIZED;
// Design note: In order to get an OA* structure back in the "List File Attributes" reply, we
// must specify the file by handle rather than by name.
boolean usedGlobalHandle = false; // @KKBA
try {
// Open the file, and obtain a file handle.
if (fileHandle_ != UNINITIALIZED) // @KKBA
{ // @KKBA
fileHandle = fileHandle_; // @KKBA
usedGlobalHandle = true; // @KKBA
} // @KKBA
else {
fileHandle = createFileHandle(); // @KKBC
if (fileHandle == UNINITIALIZED) {
if (Trace.traceOn_)
Trace.log(
Trace.ERROR,
"Unable to create handle to file " + path_ + ". IFSReturnCodeRep return code",
errorRC_);
return null;
}
}
// Send a 'list attributes' request, specifying the file handle we just created,
// and indicating that we want an OA2 structure in the reply.
IFSListAttrsReq req1 = new IFSListAttrsReq(fileHandle, attrsType, flags1, flags2);
req1.setPatternMatching(patternMatching_);
Vector replys = listAttributes(req1);
// Verify that we got exactly one reply.
if (replys == null) {
if (Trace.traceOn_)
Trace.log(Trace.WARNING, "Received null from listAttributes(fileHandle).");
} else if (replys.size() == 0) {
if (Trace.traceOn_)
Trace.log(Trace.WARNING, "Received no replies from listAttributes(fileHandle).");
} else if (replys.size() > 1) {
if (Trace.traceOn_)
Trace.log(
Trace.WARNING,
"Received multiple replies from listAttributes(fileHandle) (" + replys.size() + ")");
} else {
reply = (IFSListAttrsRep) replys.elementAt(0);
}
} finally {
if (!usedGlobalHandle && fileHandle != UNINITIALIZED) // @KKBA
close(fileHandle);
}
return reply;
}
void close(int fileHandle) throws IOException {
if (fileHandle == UNINITIALIZED) return; // @B8c
// Close the file. Send a close request to the server.
ClientAccessDataStream ds = null;
IFSCloseReq req = new IFSCloseReq(fileHandle);
try {
ds = (ClientAccessDataStream) server_.sendAndReceive(req);
} catch (ConnectionDroppedException e) {
Trace.log(Trace.ERROR, "Byte stream connection lost during close", e);
connectionDropped(e);
} catch (InterruptedException e) {
Trace.log(Trace.ERROR, "Interrupted", e);
throw new InterruptedIOException(e.getMessage());
}
// Validate the reply.
if (ds instanceof IFSCloseRep) {
int rc = ((IFSCloseRep) ds).getReturnCode();
if (rc != 0) {
Trace.log(Trace.ERROR, "IFSCloseRep return code", rc);
throw new ExtendedIOException(path_, rc);
}
} else if (ds instanceof IFSReturnCodeRep) {
int rc = ((IFSReturnCodeRep) ds).getReturnCode();
if (rc != IFSReturnCodeRep.SUCCESS) {
Trace.log(Trace.ERROR, "IFSReturnCodeRep return code", descriptionForReturnCode(rc));
throw new ExtendedIOException(path_, rc);
}
} else {
Trace.log(Trace.ERROR, "Unknown reply data stream", ds.data_);
throw new InternalErrorException(
Integer.toHexString(ds.getReqRepID()), InternalErrorException.DATA_STREAM_UNKNOWN);
}
}
/** Copies a file or directory to another file or directory. */
boolean copyTo(String destinationPath, boolean replace)
throws AS400SecurityException, IOException {
ClientAccessDataStream ds = null;
IFSCopyReq req = new IFSCopyReq(path_, destinationPath, replace);
try {
ds = (ClientAccessDataStream) server_.sendAndReceive(req);
} catch (ConnectionDroppedException e) {
Trace.log(Trace.ERROR, "Byte stream connection lost during copy", e);
connectionDropped(e);
} catch (InterruptedException e) {
Trace.log(Trace.ERROR, "Interrupted", e);
throw new InterruptedIOException(e.getMessage());
}
if (ds instanceof IFSReturnCodeRep) {
int rc = ((IFSReturnCodeRep) ds).getReturnCode();
if (rc != IFSReturnCodeRep.SUCCESS) {
String path = (rc == IFSReturnCodeRep.DUPLICATE_DIR_ENTRY_NAME ? destinationPath : path_);
throwSecurityExceptionIfAccessDenied(path, rc); // check for "access denied"
Trace.log(Trace.ERROR, "IFSReturnCodeRep return code", descriptionForReturnCode(rc));
throw new ExtendedIOException(path, rc);
}
return true;
} else {
Trace.log(Trace.ERROR, "Unknown reply data stream", ds.data_);
throw new InternalErrorException(
Integer.toHexString(ds.getReqRepID()), InternalErrorException.DATA_STREAM_UNKNOWN);
}
}
// Opens the file with specified access and option, and returns a file handle.
// If failure, sets errorRC_ and returns UNINITIALIZED.
int createFileHandle(int access, int openOption) // @D1C @B8c
throws IOException, AS400SecurityException {
int returnCode = IFSReturnCodeRep.FILE_NOT_FOUND;
int fileHandle = UNINITIALIZED;
errorRC_ = 0;
// Try to open the file for the specified type of access.
try {
// Process an open file request.
// For 3rd parm (file data CCSID), specify 0 since we don't care about CCSID.
IFSOpenReq req =
new IFSOpenReq(
getPathnameAsBytes(),
preferredServerCCSID_,
0,
access,
IFSOpenReq.DENY_NONE,
IFSOpenReq.NO_CONVERSION,
openOption,
serverDatastreamLevel_); // @D1C
ClientAccessDataStream ds = (ClientAccessDataStream) server_.sendAndReceive(req);
if (ds instanceof IFSOpenRep) {
// The open was successful. Close the file if appropriate.
returnCode = IFSReturnCodeRep.SUCCESS;
fileHandle = ((IFSOpenRep) ds).getFileHandle(); // @B8a
} else if (ds instanceof IFSReturnCodeRep) {
returnCode = ((IFSReturnCodeRep) ds).getReturnCode();
throwSecurityExceptionIfAccessDenied(path_, returnCode); // check for "access denied"
} else {
// Unknown data stream.
Trace.log(Trace.ERROR, "Unknown reply data stream", ds.data_);
throw new InternalErrorException(
Integer.toHexString(ds.getReqRepID()), InternalErrorException.DATA_STREAM_UNKNOWN);
}
} catch (ConnectionDroppedException e) {
Trace.log(Trace.ERROR, "Byte stream server connection lost", e);
connectionDropped(e);
} catch (InterruptedException e) {
Trace.log(Trace.ERROR, "Interrupted", e);
throw new InterruptedIOException(e.getMessage());
}
if (returnCode != IFSReturnCodeRep.SUCCESS) {
if (Trace.isTraceOn() && Trace.isTraceDiagnosticOn()) {
Trace.log(
Trace.DIAGNOSTIC,
"Unable to open file " + path_ + ": " + "IFSReturnCodeRep return code",
descriptionForReturnCode(returnCode));
}
errorRC_ = returnCode;
return UNINITIALIZED;
}
return fileHandle;
}
// @B8a
boolean setLength(long length) throws IOException, AS400SecurityException {
// Assume that we are connected to the server.
// Prepare to issue a 'change attributes' request.
ClientAccessDataStream ds = null;
int fileHandle = UNINITIALIZED;
try {
// Open the file for read/write, get a file handle, and call 'change attributes'.
fileHandle = createFileHandle(IFSOpenReq.WRITE_ACCESS, IFSOpenReq.OPEN_OPTION_FAIL_OPEN);
if (fileHandle == UNINITIALIZED) {
if (Trace.traceOn_)
Trace.log(
Trace.ERROR,
"Unable to create handle to file " + path_ + ". IFSReturnCodeRep return code",
errorRC_);
return false;
}
IFSChangeAttrsReq req = new IFSChangeAttrsReq(fileHandle, length, serverDatastreamLevel_);
ds = (ClientAccessDataStream) server_.sendAndReceive(req);
} catch (ConnectionDroppedException e) {
Trace.log(Trace.ERROR, "Byte stream server connection lost.");
connectionDropped(e);
} catch (InterruptedException e) {
Trace.log(Trace.ERROR, "Interrupted");
throw new InterruptedIOException(e.getMessage());
} finally {
close(fileHandle); // we don't need this handle anymore
}
// Verify the reply.
boolean success = false;
if (ds instanceof IFSReturnCodeRep) {
int rc = ((IFSReturnCodeRep) ds).getReturnCode();
if (rc == IFSReturnCodeRep.SUCCESS) success = true;
else {
throwSecurityExceptionIfAccessDenied(path_, rc); // check for "access denied"
Trace.log(
Trace.ERROR, path_ + ": IFSReturnCodeRep return code", descriptionForReturnCode(rc));
}
} else {
// Unknown data stream.
Trace.log(Trace.ERROR, "Unknown reply data stream", ds.data_);
throw new InternalErrorException(
Integer.toHexString(ds.getReqRepID()), InternalErrorException.DATA_STREAM_UNKNOWN);
}
// Back off the file pointer if needed.
if (fileOffset_ > length) {
fileOffset_ = length;
}
return success;
}
// Perform an OS/400 CCSID to Unicode conversion.
final String byteArrayToString(
byte[] buf, int offset, int length, BidiConversionProperties properties) {
if (Trace.traceOn_)
Trace.log(
Trace.CONVERSION,
"Converting byte array to string for ccsid: " + ccsid_,
buf,
offset,
length);
// Length could be twice as long because of surrogates
char[] dest = new char[length];
int to = 0;
for (int i = 0; i < length / 2; ++i) {
try {
int fromIndex =
((0x00FF & buf[(i * 2) + offset]) << 8) + (0x00FF & buf[(i * 2) + 1 + offset]);
dest[to] = toUnicode_[fromIndex];
// Check if surrogate lookup needed.
if (dest[to] == 0xD800) {
if (toUnicodeSurrogate_ != null) {
char[] surrogates = toUnicodeSurrogate_[fromIndex];
if (surrogates != null) {
dest[to] = surrogates[0];
to++;
dest[to] = surrogates[1];
to++;
} else {
// surrogate not defined, replace with sub
dest[to] = dbSubUnic_;
to++;
}
} else {
// Not handling surrogates, replace with sub
dest[to] = dbSubUnic_;
to++;
}
} else {
// Single character. Increment counter;
to++;
}
} catch (ArrayIndexOutOfBoundsException aioobe) {
// Swallow this if we are doing fault-tolerant conversion.
if (!CharConverter.isFaultTolerantConversion()) {
throw aioobe;
}
}
}
if (Trace.traceOn_)
Trace.log(
Trace.CONVERSION,
"Destination string for ccsid: " + ccsid_,
ConvTable.dumpCharArray(dest));
return String.copyValueOf(dest, 0, to);
}
IFSKey lock(
long offset, // @B2A - code relocated from IFSFileOutputStreamImplRemote,etc.
long length)
throws IOException, AS400SecurityException {
// Assume the arguments have been validated by the caller.
// Attempt to lock the file.
ClientAccessDataStream ds = null;
try {
// Issue a mandatory, exclusive lock bytes request. Mandatory
// means that the file system enforces the lock by causing any
// operation which conflicts with the lock to fail. Exclusive
// means that only the owner of the lock can read or write the
// locked area.
IFSLockBytesReq req =
new IFSLockBytesReq(fileHandle_, true, false, offset, length, serverDatastreamLevel_);
ds = (ClientAccessDataStream) server_.sendAndReceive(req);
} catch (ConnectionDroppedException e) {
Trace.log(Trace.ERROR, "Byte stream server connection lost");
connectionDropped(e);
} catch (InterruptedException e) {
Trace.log(Trace.ERROR, "Interrupted", e);
throw new InterruptedIOException(e.getMessage());
}
// Verify the reply.
if (ds instanceof IFSLockBytesRep) {
int rc = ((IFSLockBytesRep) ds).getReturnCode();
if (rc != 0) {
Trace.log(Trace.ERROR, "IFSLockBytesRep return code", rc);
throw new ExtendedIOException(path_, rc);
}
} else if (ds instanceof IFSReturnCodeRep) {
int rc = ((IFSReturnCodeRep) ds).getReturnCode();
if (rc != IFSReturnCodeRep.SUCCESS) {
throwSecurityExceptionIfAccessDenied(path_, rc); // check for "access denied"
Trace.log(Trace.ERROR, "IFSReturnCodeRep return code", descriptionForReturnCode(rc));
throw new ExtendedIOException(path_, rc);
}
} else {
// Unknown data stream.
Trace.log(Trace.ERROR, "Unknown reply data stream", ds.data_);
throw new InternalErrorException(
Integer.toHexString(ds.getReqRepID()), InternalErrorException.DATA_STREAM_UNKNOWN);
}
// Generate the key for this lock.
IFSKey key = new IFSKey(fileHandle_, offset, length, true);
return key;
}
final byte[] stringToByteArray(char[] src, int offset, int length) {
if (Trace.traceOn_)
Trace.log(
Trace.CONVERSION,
"Converting string to byte array for ccsid: " + ccsid_,
ConvTable.dumpCharArray(src, offset, length));
byte[] dest = new byte[length * 2];
for (int destPos = 0, srcPos = offset; srcPos < length; ++srcPos) {
dest[destPos++] = (byte) (src[srcPos] >>> 8);
dest[destPos++] = (byte) src[srcPos];
}
if (Trace.traceOn_)
Trace.log(Trace.CONVERSION, "Destination byte array for ccsid: " + ccsid_, dest);
return dest;
}
/**
* Returns the value of the "list status indicator" field returned by QGY* API's.
*
* @param listInformation The "list information" structure returned by a QGY* API (that requested
* the building of a list).
* @return The converted value of the "list status information" field. Possible values are '0',
* '1', '2', '3', '4', or '5'.
* @throws ErrorCompletingRequestException if the List Status Information is other than
* "complete", "being built", or "pending"; or if the Information Complete Indicator is
* "interrupted".
*/
private static char checkListStatus(byte[] listInformation)
throws ErrorCompletingRequestException {
char infoCompleteIndicator, listStatusIndicator;
try {
// Convert the two CHAR(1) fields from EBCDIC to Unicode.
byte[] arry = {listInformation[16]}; // ICI is at offset 16
infoCompleteIndicator = new CharConverter(37).byteArrayToString(arry, 0, 1).charAt(0);
arry[0] = listInformation[30]; // LSI is at offset 30
listStatusIndicator = new CharConverter(37).byteArrayToString(arry, 0, 1).charAt(0);
} catch (java.io.UnsupportedEncodingException e) { // will never happen
throw new InternalErrorException(InternalErrorException.UNEXPECTED_EXCEPTION, e.getMessage());
}
switch (listStatusIndicator) {
case LIST_COMPLETE:
break; // This is the indicator that we normally expect.
case LIST_BEING_BUILT:
case LIST_PENDING:
// These status values are unusual, but aren't necessarily error conditions
// (even if we indicated we wanted the list built synchronously).
if (Trace.traceOn_)
Trace.log(Trace.DIAGNOSTIC, "List status indicator:", listStatusIndicator);
break;
default: // any other status
StringBuffer msg = new StringBuffer("Unable to synchronously build object list on server.");
try {
msg.append("\n List status indicator: " + listStatusIndicator);
msg.append("\n Info complete indicator: " + infoCompleteIndicator);
msg.append("\n Total records: " + BinaryConverter.byteArrayToInt(listInformation, 0));
msg.append("\n Records returned: " + BinaryConverter.byteArrayToInt(listInformation, 4));
} catch (Throwable t) {
} // will never happen
finally {
Trace.log(Trace.ERROR, msg.toString());
}
throw new ErrorCompletingRequestException(ErrorCompletingRequestException.AS400_ERROR);
}
if (infoCompleteIndicator == INFORMATION_INTERRUPTED) {
Trace.log(Trace.ERROR, "Info complete indicator: " + infoCompleteIndicator);
throw new ErrorCompletingRequestException(ErrorCompletingRequestException.AS400_ERROR);
}
return listStatusIndicator;
}
// Constructor.
ConvTableDoubleMap(int ccsid, char[] toUnicode, char[] fromUnicode) {
super(ccsid);
toUnicode_ = decompress(toUnicode);
fromUnicode_ = decompress(fromUnicode);
if (Trace.traceOn_)
Trace.log(Trace.CONVERSION, "Successfully loaded double-byte map for ccsid: " + ccsid_);
}
// $A1
public void sync() throws IOException {
if (parent_ == null) {
Trace.log(Trace.ERROR, "IFSFileDescriptor.sync() was called when parent is null.");
}
// Note: UserSpaceImplRemote creates an IFSFileDescriptorImplRemote directly.
else if (parent_ instanceof IFSRandomAccessFileImplRemote) {
((IFSRandomAccessFileImplRemote) parent_).flush();
} else if (parent_ instanceof IFSFileOutputStreamImplRemote) {
((IFSFileOutputStreamImplRemote) parent_).flush();
} else {
Trace.log(
Trace.WARNING,
"IFSFileDescriptor.sync() was called "
+ "when parent is neither an IFSRandomAccessFile nor an IFSFileOutputStream.");
}
}
static {
try {
EventSetDescriptor propertyChange =
new EventSetDescriptor(
BEAN_CLASS, "propertyChange", PropertyChangeListener.class, "propertyChange");
propertyChange.setDisplayName(ResourceBundleLoader.getText("EVT_NAME_PROPERTY_CHANGE"));
propertyChange.setShortDescription(ResourceBundleLoader.getText("EVT_DESC_PROPERTY_CHANGE"));
eventSetDescriptors_ = new EventSetDescriptor[] {propertyChange};
PropertyDescriptor path = new PropertyDescriptor("path", BEAN_CLASS);
path.setBound(true);
path.setConstrained(false);
path.setDisplayName(ResourceBundleLoader.getText("PROP_NAME_PATH"));
path.setShortDescription(ResourceBundleLoader.getText("PROP_DESC_PATH"));
PropertyDescriptor system = new PropertyDescriptor("system", BEAN_CLASS);
system.setBound(true);
system.setConstrained(false);
system.setDisplayName(ResourceBundleLoader.getText("PROP_NAME_SYSTEM"));
system.setShortDescription(ResourceBundleLoader.getText("PROP_DESC_SYSTEM"));
propertyDescriptors_ = new PropertyDescriptor[] {path, system};
} catch (IntrospectionException e) {
Trace.log(Trace.ERROR, "Unexpected IntrospectionException:", e);
throw new InternalErrorException(InternalErrorException.UNEXPECTED_EXCEPTION);
}
}
// Perform a Unicode to AS/400 CCSID conversion.
final byte[] stringToByteArray(String source, BidiConversionProperties properties) {
char[] src = source.toCharArray();
if (Trace.traceOn_)
Trace.log(
Trace.CONVERSION,
"Converting string to byte array for ccsid: " + ccsid_,
ConvTable.dumpCharArray(src));
byte[] dest = new byte[src.length * 2];
for (int i = 0; i < src.length; ++i) {
dest[i * 2] = (byte) (fromUnicode_[src[i]] >>> 8);
dest[i * 2 + 1] = (byte) (0x00FF & fromUnicode_[src[i]]);
}
if (Trace.traceOn_)
Trace.log(Trace.CONVERSION, "Destination byte array for ccsid: " + ccsid_, dest);
return dest;
}
public void close() {
try {
close0();
} catch (IOException e) {
Trace.log(Trace.ERROR, "Error while closing file " + path_, e);
}
}
// Cast an IFSFileDescriptorImpl object into an IFSFileDescriptorImplRemote.
// Used by various IFS*ImplRemote classes.
static IFSFileDescriptorImplRemote castImplToImplRemote(IFSFileDescriptorImpl fd) {
try {
return (IFSFileDescriptorImplRemote) fd;
} catch (ClassCastException e) {
Trace.log(Trace.ERROR, "Argument is not an instance of IFSFileDescriptorImplRemote", e);
throw new InternalErrorException(InternalErrorException.UNEXPECTED_EXCEPTION);
}
}
final String byteArrayToString(byte[] buf, int offset, int length) {
if (Trace.traceOn_)
Trace.log(
Trace.CONVERSION,
"Converting byte array to string for ccsid: " + ccsid_,
buf,
offset,
length);
char[] dest = new char[length / 2];
for (int destPos = 0, bufPos = offset; destPos < dest.length; ++destPos) {
dest[destPos] = (char) (((buf[bufPos++] & 0xFF) << 8) + (buf[bufPos++] & 0xFF));
}
if (Trace.traceOn_)
Trace.log(
Trace.CONVERSION,
"Destination string for ccsid: " + ccsid_,
ConvTable.dumpCharArray(dest));
return String.copyValueOf(dest);
}
/**
* Undoes a lock on this file.
*
* @param key The key for the lock.
* @exception IOException If an error occurs while communicating with the server.
* @see IFSKey
* @see #lock
*/
void unlock(IFSKey key) // @B2A - code relocated from IFSFileOutputStreamImplRemote,etc.
throws IOException, AS400SecurityException {
// Assume the argument has been validated by the caller.
// Verify that this key is compatible with this file.
if (key.fileHandle_ != fileHandle_) {
Trace.log(Trace.ERROR, "Attempt to use IFSKey on different file stream.");
throw new ExtendedIllegalArgumentException(
"key", ExtendedIllegalArgumentException.PARAMETER_VALUE_NOT_VALID);
}
// Attempt to unlock the file.
ClientAccessDataStream ds = null;
// Issue an unlock bytes request.
IFSUnlockBytesReq req =
new IFSUnlockBytesReq(
key.fileHandle_, key.offset_, key.length_, key.isMandatory_, serverDatastreamLevel_);
try {
ds = (ClientAccessDataStream) server_.sendAndReceive(req);
} catch (ConnectionDroppedException e) {
Trace.log(Trace.ERROR, "Byte stream server connection lost");
connectionDropped(e);
} catch (InterruptedException e) {
Trace.log(Trace.ERROR, "Interrupted", e);
throw new InterruptedIOException(e.getMessage());
}
// Verify the reply.
if (ds instanceof IFSReturnCodeRep) {
int rc = ((IFSReturnCodeRep) ds).getReturnCode();
if (rc != IFSReturnCodeRep.SUCCESS) {
throwSecurityExceptionIfAccessDenied(path_, rc); // check for "access denied"
Trace.log(Trace.ERROR, "IFSReturnCodeRep return code", descriptionForReturnCode(rc));
throw new ExtendedIOException(path_, rc);
}
} else {
// Unknown data stream.
Trace.log(Trace.ERROR, "Unknown reply data stream", ds.data_);
throw new InternalErrorException(
Integer.toHexString(ds.getReqRepID()), InternalErrorException.DATA_STREAM_UNKNOWN);
}
}
// Helper method used to decompress conversion tables when they are initialized.
char[] decompress(char[] arr) {
if (Trace.traceOn_)
Trace.log(
Trace.CONVERSION,
"Decompressing double-byte conversion table for ccsid: " + ccsid_,
arr.length);
char[] buf = new char[65536];
int c = 0;
for (int i = 0; i < arr.length; ++i) {
if (arr[i] == cic_) {
if (arr[i + 1] == pad_) {
buf[c++] = arr[i++];
} else {
long max = (0xFFFF & arr[i + 1]) + (0xFFFF & c);
char ch = arr[i + 2];
while (c < max) {
buf[c++] = ch;
}
i += 2;
}
} else if (arr[i] == ric_) {
if (arr[i + 1] == pad_) {
buf[c++] = arr[i++];
} else {
int start = (0xFFFF & arr[i + 2]);
int num = (0xFFFF & arr[i + 1]);
for (int j = start; j < (num + start); ++j) {
buf[c++] = (char) j;
}
i += 2;
}
} else if (arr[i] == hbic_) {
if (arr[i + 1] == pad_) {
buf[c++] = arr[i++];
} else {
int hbNum = (0x0000FFFF & arr[++i]);
char firstChar = arr[++i];
char highByteMask = (char) (0xFF00 & firstChar);
buf[c++] = firstChar;
++i;
for (int j = 0; j < hbNum; ++j) {
char both = arr[i + j];
buf[c++] = (char) (highByteMask + ((0xFF00 & both) >>> 8));
buf[c++] = (char) (highByteMask + (0x00FF & both));
}
i = i + hbNum - 1;
}
} else { // Regular character.
buf[c++] = arr[i];
}
}
return buf;
}
/**
* Returns the DDS description for the field. This is a string containing the description of the
* field as it would be specified in a DDS source file. This method is used by
* AS400File.createDDSSourceFile (called by the AS400File.create methods) to specify the field in
* the DDS source file which is used to create the file for the user who has passed in a
* RecordFormat object.
*
* @return The DDS description of this field properly formatted for entry into a DDS source file.
*/
String[] getDDSDescription() {
Vector v = new Vector();
// Name columns (10)
StringBuffer desc = new StringBuffer(ddsName_);
// Blank pad the ddsName to 10 characters.
while (desc.length() < 10) {
desc.append(" ");
}
// Reference column (1)
if (!refFld_.equals("")) {
desc.append("R");
} else {
desc.append(" ");
}
// Get length as 5 digit string, right justified
// Length columns (5)
desc.append(" "); // No length can be specified for a date field
// Type column (1)
desc.append("L");
// Decimal positions columns (2)
desc.append(" ");
// Not used columns (7)
desc.append(" ");
// Add fixed portion of DDS description to Vector
v.addElement(desc.toString());
// Add the field level keywords
String[] keywords = super.getFieldFunctions();
if (keywords != null) {
for (int i = 0; i < keywords.length; ++i) {
v.addElement(keywords[i]);
}
}
if (dateFormat_ != null) {
v.addElement("DATFMT(" + dateFormat_ + ") ");
}
if (dateSeparator_ != null) {
if (!formatHasFixedSeparator(dateFormat_)) {
v.addElement("DATSEP('" + dateSeparator_ + "') ");
} else {
if (Trace.traceOn_)
Trace.log(Trace.DIAGNOSTIC, "DDS date format " + dateFormat_ + " has a fixed separator.");
}
}
if (defaultValue_ != null) {
v.addElement("DFT('" + defaultValue_.toString() + "') ");
}
// @B0A
else if (isDFTNull_) {
v.addElement("DFT(*NULL) ");
}
String[] s = new String[v.size()];
v.copyInto(s);
return s;
}
/**
* Calls QGYGTLE (repeatedly if necessary) until the specified list is completely built. For use
* following calls to APIs that return an "Open list information format" structure.
*
* @param system The system where the list is being built.
* @param listHandle The list handle for the list.
* @param listInformation The "list information" structure returned by a QGY* API (that requested
* the building of a list).
* @return The final "list information" structure.
*/
static byte[] waitForListToComplete(AS400 system, byte[] listHandle, byte[] listInformation)
throws AS400SecurityException, ErrorCompletingRequestException, InterruptedException,
IOException, ObjectDoesNotExistException {
ProgramCall pgmCall = null; // for calling QGYGTLE
final int waitSecondsPerIteration = 1; // wait 1 second between retries
int accumulatedWaitSeconds = 0; // accumulated total wait time
int maxWaitSeconds = getMaxWaitTime();
char listStatus = checkListStatus(listInformation);
while (listStatus != LIST_COMPLETE && accumulatedWaitSeconds < maxWaitSeconds) {
try {
Thread.sleep(waitSecondsPerIteration * 1000); // wait for 1 second
accumulatedWaitSeconds += waitSecondsPerIteration;
} catch (InterruptedException ie) {
} // ignore
if (Trace.traceOn_)
Trace.log(Trace.DIAGNOSTIC, "Calling QGYGTLE.PGM to wait for list to be completely built.");
// See if the building of the list (on the server) has completed yet.
// Note: Even when we specify '-1' for the "number of records" parameter on the QGYOxxx
// request (to build the list synchronously), we can encounter a "list being built" status, if
// the request is building a massively large list of objects.
if (pgmCall == null) pgmCall = new ProgramCall(system);
listInformation = refreshListInformation(listHandle, pgmCall);
listStatus = checkListStatus(listInformation);
}
if (listStatus != LIST_COMPLETE) {
Trace.log(
Trace.ERROR,
"The building of the list did not complete within the specified time limit of "
+ maxWaitSeconds
+ " seconds.");
throw new ErrorCompletingRequestException(ErrorCompletingRequestException.AS400_ERROR);
}
return listInformation;
}
private static final void throwSecurityExceptionIfAccessDenied(String path, int returnCode)
throws AS400SecurityException {
if (returnCode == IFSReturnCodeRep.ACCESS_DENIED_TO_DIR_ENTRY
|| returnCode == IFSReturnCodeRep.ACCESS_DENIED_TO_REQUEST) {
if (Trace.traceOn_)
Trace.log(
Trace.DIAGNOSTIC,
"Access denied to file " + path + ". " + "IFSReturnCodeRep return code",
returnCode);
throw new AS400SecurityException(path, AS400SecurityException.DIRECTORY_ENTRY_ACCESS_DENIED);
}
}
// Ignores fileHandle if state==false.
void setOpen(boolean state, int fileHandle) {
if (state == true) {
if (fileHandle == UNINITIALIZED) {
Trace.log(Trace.ERROR, "Called setOpen with invalid file handle: " + fileHandle);
throw new InternalErrorException(InternalErrorException.UNEXPECTED_EXCEPTION);
} else {
if (fileHandle != fileHandle_) close(); // close currently-open handle if different
fileHandle_ = fileHandle;
}
}
isOpen_ = state;
}
/**
* Disconnects from the byte stream server.
*
* @exception ConnectionDroppedException If the connection is dropped unexpectedly.
*/
void connectionDropped(
ConnectionDroppedException e) // @B2A - code relocated from IFSFileOutputStreamImplRemote,etc.
throws ConnectionDroppedException {
if (server_ != null) {
system_.disconnectServer(server_);
server_ = null;
try {
close();
} catch (Exception exc) {
} // Note: Not relevant for IFSFileImplRemote.
}
Trace.log(Trace.ERROR, "Byte stream connection lost.");
throw e;
}
// Returns the maximum number of seconds to wait for a list to be built.
private static int getMaxWaitTime() {
int listWaitTimeout = DEFAULT_MAX_WAIT_TIME;
String propVal = SystemProperties.getProperty(SystemProperties.LIST_WAIT_TIMEOUT);
if (propVal != null) {
try {
listWaitTimeout = Integer.parseInt(propVal);
if (listWaitTimeout == 0) listWaitTimeout = Integer.MAX_VALUE; // '0' means "no limit"
} catch (Exception e) {
if (Trace.traceOn_)
Trace.log(Trace.WARNING, "Error retrieving listWaitTimeout property value:", e);
}
}
return listWaitTimeout;
}
/** Chooses the appropriate implementation. */
void chooseImpl() throws IOException, AS400SecurityException {
// We need to get the system to connect to...
AS400 system = getSystem();
if (system == null) {
Trace.log(Trace.ERROR, "Attempt to use AFPResource before setting system.");
throw new ExtendedIllegalStateException(
"system", ExtendedIllegalStateException.PROPERTY_NOT_SET);
}
impl_ =
(PrintObjectImpl)
system.loadImpl2(
"com.ibm.as400.access.AFPResourceImplRemote",
"com.ibm.as400.access.AFPResourceImplProxy");
super.setImpl();
}
// Sets the values of the fields relating to file size.
private final void setFileSizeFields(long fileSize, int datastreamLevel) {
if (datastreamLevel < 16) { // Just set the old field.
if (fileSize > (long) Integer.MAX_VALUE) {
if (Trace.traceOn_)
Trace.log(
Trace.WARNING,
"Specified fileSize value ("
+ fileSize
+ ") exceeds maximum file length supported by system.");
fileSize = (long) Integer.MAX_VALUE; // set to maximum possible 'int' value
}
set32bit((int) fileSize, FILE_SIZE_OFFSET);
} else {
// The old field must be zero.
set32bit(0, FILE_SIZE_OFFSET);
// Also set the new "large" field.
set64bit(fileSize, LARGE_FILE_SIZE_OFFSET);
}
}
// Note: We call this "finalize0" because a "finalize" method would need to be protected; and we
// want other classes to call this method.
void finalize0() // @B2A
throws Throwable {
try {
if (fileHandle_ != UNINITIALIZED) // @B8c
{
// Close the file. Send a close request to the server.
IFSCloseReq req = new IFSCloseReq(fileHandle_);
try {
server_.sendAndDiscardReply(req);
} finally {
// Reset isOpen_ and fileHandle_ to reflect that it is closed @A3A
isOpen_ = false; // @A3A
fileHandle_ = UNINITIALIZED; // @A3A
// close0(); //@A3D
}
}
} catch (Throwable e) {
Trace.log(Trace.ERROR, "Error during finalization.", e);
} finally {
super.finalize();
}
}
